Romilly Cocking and his wife own an allotment about half a kilometre from where they live. Romilly wanted to set up a wireless monitor between the greenhouse on the allotment and their home. To do this, he’s experimenting with a Wireless Things (previously Ciseco) XinoRF (which is a wireless-enabled Arduino compatible board) which will be battery powered and seeing if he can get the Raspberry Pi at his home to pick up the signal. This is just in the preliminary stages at the moment, and Romilly isn’t even sure if the signal will carry that far, but he’s blogged about it and posted up the code he’s using in his proof-of-concept. Read more here.